| nicksanspam@ece.villanova.edu 2005-06-26, 4:25 am |
| Stretch <sixfoot7@sccoast.net> wrote:
quote:
>It may work in the winter here, but we don't need it in the winter!
What's "it"?
quote:
>It would make the house too cold inside.
Dehumidifiers warm houses... So does the sun.
quote:
>We don't have basements here, most places the water table is only about
>3 feet down...
Perhaps you have slabs over vapor barriers.
Perhaps they should have insulation beneath.
quote:
>Storing mosture in a basement slab could encourage mold growth.
Nonono. Don't deliberately store mosture. Dry out a slab in wintertime
and let it absorb mosture in summer months to avoid energy-inefficient
compressive dehumidification, in a fairly airtight house, instead of
keeping the RH constant all year. Use the mosture storage capacity of
a house for good vs evil. But as you say, this won't work everywhere.
quote:
>The device would probably work in some parts of the USA, but not here.
Which device? Wilmington NC has w = 0.0048 in January and 0.0168 in July.
If we dry out a 4"x2400ft^2 slab in a house at 65 F in January, how much
mosture can it absorb in July before the RH hits 55% at 80 F?
quote:
>Nick, You should go into HVAC contracting. It would be interesting to see
>if you just went broke or got sued out of existance. But you sure keep
>things interesting here! :-)
Thanks. PE Drew Gillett and I might give another 1-day workshop on solar
house heating and natural cooling on 9/23-24 at the First PA Renewable
Energy Fest near Allentown. Our Portland OR version had 40 victims, lots
of engineers and one university prof. You might enjoy attending this one
and heckling.
Nick
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